cmdline.c

一个很有名的浏览器

				break;

			case OPT_COLOR:
			{
				color_t color = option->value.color;
				unsigned char hexcolor[8];

				printf(gettext("(default: %s)"),
				       get_color_string(color, hexcolor));
				break;
			}

			case OPT_COMMAND:
				break;

			case OPT_LANGUAGE:
#ifdef ENABLE_NLS
				printf(gettext("(default: \"%s\")"),
				       language_to_name(option->value.number));
#endif
				break;

			case OPT_TREE:
			{
				int pathlen = strlen(path);
				int namelen = strlen(option->name);

				if (pathlen + namelen + 2 > MAX_STR_LEN)
					continue;

				/* Append option name to path */
				if (pathlen > 0) {
					memcpy(saved, path, pathlen);
					savedpos = saved + pathlen;
				} else {
					savedpos = saved;
				}
				memcpy(savedpos, option->name, namelen + 1);
				savedpos += namelen;

				capt = gettext_nonempty(capt);
				printf("  %s: (%s)", capt, saved);
				break;
			}
		}

		printf("\n    %8s", "");
		{
			int l = strlen(desc);
			int i;

			for (i = 0; i < l; i++) {
				putchar(desc[i]);

				if (desc[i] == '\n')
					printf("    %8s", "");
			}
		}
		printf("\n\n");

		if (option->type == OPT_TREE) {
			memcpy(savedpos, ".", 2);
			print_full_help(option, saved);
		}

		savedpos = saved;
		*savedpos = 0;
	}
}

static void
print_short_help()
{
#define ALIGN_WIDTH 20
	struct option *option;
	struct string string = NULL_STRING;
	struct string *saved = NULL;
	unsigned char align[ALIGN_WIDTH];

	/* Initialize @space used to align captions. */
	memset(align, ' ', sizeof(align) - 1);
	align[sizeof(align) - 1] = 0;

	foreach (option, *cmdline_options->value.tree) {
		unsigned char *capt;
		unsigned char *help;
		unsigned char *info = saved ? saved->source
					    : (unsigned char *) "";
		int len = strlen(option->name);

		/* Avoid printing compatibility options */
		if (option->flags & OPT_HIDDEN)
			continue;

		/* When no caption is available the option name is 'stacked'
		 * and the caption is shared with next options that has one. */
		if (!option->capt) {
			if (!saved) {
				if (!init_string(&string))
					continue;

				saved = &string;
			}

			add_to_string(saved, option->name);
			add_to_string(saved, ", -");
			continue;
		}

		capt = gettext_nonempty(option->capt);
		help = gettext_nonempty(option_types[option->type].help_str);

		/* When @help string is non empty align at least one space. */
		len = ALIGN_WIDTH - len - strlen(help);
		len -= (saved ? saved->length : 0);
		len = (len < 0) ? !!(*help) : len;

		align[len] = '\0';
		printf("  -%s%s %s%s%s\n",
		       info, option->name, help, align, capt);
		align[len] = ' ';
		if (saved) {
			done_string(saved);
			saved = NULL;
		}
	}
#undef ALIGN_WIDTH
}

#undef gettext_nonempty

static unsigned char *
printhelp_cmd(struct option *option, unsigned char ***argv, int *argc)
{
	unsigned char *lineend = strchr(full_static_version, '\n');

	if (lineend) *lineend = '\0';

	printf("%s\n\n", full_static_version);

	if (!strcmp(option->name, "config-help")) {
		printf("%s:\n", gettext("Configuration options"));
		print_full_help(config_options, "");
	} else {
		printf("%s\n\n%s:\n",
		       gettext("Usage: elinks [OPTION]... [URL]"),
		       gettext("Options"));
		if (!strcmp(option->name, "long-help")) {
			print_full_help(cmdline_options, "-");
		} else {
			print_short_help();
		}
	}

	fflush(stdout);
	return "";
}

static unsigned char *
redir_cmd(struct option *option, unsigned char ***argv, int *argc)
{
	unsigned char *target;

	/* I can't get any dirtier. --pasky */

	if (!strcmp(option->name, "confdir")) {
		target = "config-dir";
	} else if (!strcmp(option->name, "conffile")) {
		target = "config-file";
	} else if (!strcmp(option->name, "stdin")) {
		static int complained;

		if (complained)
			return NULL;
		complained = 1;

		/* Emulate bool option, possibly eating following 0/1. */
		if ((*argv)[0]
		    && ((*argv)[0][0] == '0' || (*argv)[0][0] == '1')
		    && !(*argv)[0][1])
			(*argv)++, (*argc)--;
		fprintf(stderr, "Warning: Deprecated option -stdin used!\n");
		fprintf(stderr, "ELinks now determines the -stdin option value automatically.\n");
		fprintf(stderr, "In the future versions ELinks will report error when you will\n");
		fprintf(stderr, "continue to use this option.\a\n");
		return NULL;

	} else {
		return gettext("Internal consistency error");
	}

	option = get_opt_rec(cmdline_options, target);
	assert(option);
	option_types[option->type].cmdline(option, argv, argc);
	return NULL;
}

static unsigned char *
printconfigdump_cmd(struct option *option, unsigned char ***argv, int *argc)
{
	unsigned char *config_string;

	/* Print all. */
	get_opt_int("config.saving_style") = 2;

	config_string = create_config_string("", "", config_options);
	if (config_string) {
		printf("%s", config_string);
		mem_free(config_string);
	}

	fflush(stdout);
	return "";
}


/**********************************************************************
 Options values
**********************************************************************/

/* Keep options in alphabetical order. */

struct option_info cmdline_options_info[] = {
	INIT_OPT_BOOL("", N_("Restrict to anonymous mode"),
		"anonymous", 0, 0,
		N_("Restricts ELinks so it can run on an anonymous account.\n"
		"Local file browsing, downloads, and modification of options\n"
		"will be disabled. Execution of viewers is allowed, but entries\n"
		"in the association table can't be added or modified.")),

	INIT_OPT_BOOL("", N_("Autosubmit first form"),
		"auto-submit", 0, 0,
		N_("Automatically submit the first form in the given URLs.")),

	INIT_OPT_INT("", N_("Clone internal session with given ID"),
		"base-session", 0, 0, INT_MAX, 0,
		N_("Used internally when opening ELinks instances in new windows.\n"
		"The ID maps to information that will be used when creating the\n"
		"new instance. You don't want to use it.")),

	INIT_OPT_COMMAND("", NULL, "confdir", OPT_HIDDEN, redir_cmd, NULL),

	INIT_OPT_STRING("", N_("Name of directory with configuration file"),
		"config-dir", 0, "",
		N_("Path of the directory ELinks will read and write its\n"
		"config and runtime state files to instead of ~/.elinks.\n"
		"If the path does not begin with a '/' it is assumed to be\n"
		"relative to your HOME directory.")),

	INIT_OPT_COMMAND("", N_("Print default configuration file to stdout"),
		"config-dump", 0, printconfigdump_cmd,
		N_("Print a configuration file with options set to the built-in\n"
		"defaults to stdout.")),

	INIT_OPT_COMMAND("", NULL, "conffile", OPT_HIDDEN, redir_cmd, NULL),

	INIT_OPT_STRING("", N_("Name of configuration file"),
		"config-file", 0, "elinks.conf",
		N_("Name of the configuration file that all configuration\n"
		"options will be read from and written to. It should be\n"
		"relative to config-dir.")),

	INIT_OPT_COMMAND("", N_("Print help for configuration options"),
		"config-help", 0, printhelp_cmd,
		N_("Print help for configuration options and exit.")),

	INIT_OPT_CMDALIAS("", N_("MIME type assumed for unknown document types"),
		"default-mime-type", 0, "mime.default_type",
		N_("The default MIME type used for documents of unknown type.")),

	INIT_OPT_BOOL("", N_("Ignore user-defined keybindings"),
		"default-keys", 0, 0,
		N_("When set, all keybindings from configuration files will be\n"
		"ignored. It forces use of default keybindings and will reset\n"
		"user-defined ones on save.")),

	INIT_OPT_BOOL("", N_("Print formatted versions of given URLs to stdout"),
		"dump", 0, 0,
		N_("Print formatted plain-text versions of given URLs to stdout.")),

	INIT_OPT_CMDALIAS("", N_("Codepage to use with -dump"),
		"dump-charset", 0, "document.dump.codepage",
		N_("Codepage used when formatting dump output.")),

	INIT_OPT_CMDALIAS("", N_("Width of document formatted with -dump"),
		"dump-width", 0, "document.dump.width",
		N_("Width of the dump output.")),

	INIT_OPT_COMMAND("", N_("Evaluate configuration file directive"),
		"eval", 0, eval_cmd,
		N_("Specify configuration file directives on the command-line\n"
		"which will be evaluated after all configuration files has been\n"
		"read. Example usage:\n"
		"\t-eval 'set protocol.file.allow_special_files = 1'")),

	/* lynx compatibility */
	INIT_OPT_COMMAND("", N_("Interpret documents of unknown types as HTML"),
		"force-html", 0, forcehtml_cmd,
		N_("Makes ELinks assume documents of unknown types are HTML.\n"
		"Useful when using ELinks as an external viewer from MUAs.\n"
		"This is equivalent to -default-mime-type text/html.")),

	/* XXX: -?, -h and -help share the same caption and should be kept in
	 * the current order for usage help printing to be ok */
	INIT_OPT_COMMAND("", NULL, "?", 0, printhelp_cmd, NULL),

	INIT_OPT_COMMAND("", NULL, "h", 0, printhelp_cmd, NULL),

	INIT_OPT_COMMAND("", N_("Print usage help and exit"),
		"help", 0, printhelp_cmd,
		N_("Print usage help and exit.")),

	INIT_OPT_BOOL("", N_("Only permit local connections"),
		"localhost", 0, 0,
		N_("Restricts ELinks to work offline and only connect to servers\n"
		"with local addresses (ie. 127.0.0.1). No connections to remote\n"
		"servers will be permitted.")),

	INIT_OPT_COMMAND("", N_("Print detailed usage help and exit"),
		"long-help", 0, printhelp_cmd,
		N_("Print detailed usage help and exit.")),

	INIT_OPT_COMMAND("", N_("Look up specified host"),
		"lookup", 0, lookup_cmd,
		N_("Look up specified host and print all DNS resolved IP addresses.")),

	INIT_OPT_BOOL("", N_("Run as separate instance"),
		"no-connect", 0, 0,
		N_("Run ELinks as a separate instance instead of connecting to an\n"
		"existing instance. Note that normally no runtime state files\n"
		"(bookmarks, history, etc.) are written to the disk when this\n"
		"option is used. See also -touch-files.")),

	INIT_OPT_BOOL("", N_("Disable use of files in ~/.elinks"),
		"no-home", 0, 0,
		N_("Disables creation and use of files in the user specific home\n"
		"configuration directory (~/.elinks). It forces default configuration\n"
		"values to be used and disables saving of runtime state files.")),

	INIT_OPT_BOOL("", N_("Disable link numbering in dump output"),
		"no-numbering", 0, 0,
		N_("Prevents printing of link number in dump output.\n"
		"Note that this really affects only -dump, nothing else.")),

	INIT_OPT_BOOL("", N_("Disable printing of link references in dump output"),
		"no-references", 0, 0,
		N_("Prevents printing of references (URIs) of document links\n"
		"in dump output.\n"
		"Note that this really affects only -dump, nothing else.")),

	INIT_OPT_COMMAND("", N_("Control an already running ELinks"),
		"remote", 0, remote_cmd,
		N_("Control a remote ELinks instance by passing commands to it.\n"
		"The option takes an additional argument containing the method\n"
		"which should be invoked and any parameters that should be passed\n"
		"to it. For ease of use, the additional method argument can be\n"
		"omitted in which case any URL arguments will be opened in new\n"
		"tabs in the remote instance.\n"
		"Following is a list of the supported methods:\n"
		"\tping()                    : look for a remote instance\n"
		"\topenURL()                 : prompt URL in current tab\n"
		"\topenURL(URL)              : open URL in current tab\n"
		"\topenURL(URL, new-tab)     : open URL in new tab\n"
		"\topenURL(URL, new-window)  : open URL in new window\n"
		"\taddBookmark(URL)          : bookmark URL\n"
		"\txfeDoCommand(openBrowser) : open new window")),

	INIT_OPT_INT("", N_("Connect to session ring with given ID"),
		"session-ring", 0, 0, INT_MAX, 0,
		N_("ID of session ring this ELinks session should connect to. ELinks\n"
		"works in so-called session rings, whereby all instances of ELinks\n"
		"are interconnected and share state (cache, bookmarks, cookies,\n"
		"and so on). By default, all ELinks instances connect to session\n"
		"ring 0. You can change that behaviour with this switch and form as\n"
		"many session rings as you want. Obviously, if the session-ring with\n"
		"this number doesn't exist yet, it's created and this ELinks instance\n"
		"will become the master instance (that usually doesn't matter for you\n"
		"as a user much). Note that you usually don't want to use this unless\n"
		"you're a developer and you want to do some testing - if you want the\n"
		"ELinks instances each running standalone, rather use the -no-connect\n"
		"command-line option. Also note that normally no runtime state files\n"
		"are written to the disk when this option is used. See also\n"
		"-touch-files.")),

	INIT_OPT_BOOL("", N_("Print the source of given URLs to stdout"),
		"source", 0, 0,
		N_("Print given URLs in source form to stdout.")),

	INIT_OPT_COMMAND("", NULL, "stdin", OPT_HIDDEN, redir_cmd, NULL),

	INIT_OPT_BOOL("", N_("Touch files in ~/.elinks when running with -no-connect/-session-ring"),
		"touch-files", 0, 0,
		N_("When enabled, runtime state files (bookmarks, history, etc.) are\n"
		"written to disk, even when -no-connect or -session-ring is used.\n"
		"The option has no effect if not used in conjunction with any of\n"
		"these options.")),

	INIT_OPT_INT("", N_("Verbose level"),
		"verbose", 0, 0, VERBOSE_LEVELS - 1, VERBOSE_WARNINGS,
		N_("The verbose level controls what messages are shown at\n"
		"start up and while running:\n"
		"\t0 means only show serious errors\n"
		"\t1 means show serious errors and warnings\n"
		"\t2 means show all messages")),

	INIT_OPT_COMMAND("", N_("Print version information and exit"),
		"version", 0, version_cmd,
		N_("Print ELinks version information and exit.")),

	NULL_OPTION_INFO,
};